user-avatar
haivkl99
2 năm trước
nêu cách nhận biết 3 lọ đựng 3 chất khí không màu riêng biệt :Co2, CH4, C2H4 bằng phương pháp hoá học (viết PTHH nếu có
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

11.Robots can our houses when we are away. A.see B.guard C.look at D.look 12.In the future, robots will be able to do more things for us. A.easy B.harder C.complicated D.much difficul 13.I don't agree you that robots will be able to write a letter to an English friend. A.of B.about C.to D.with 14.They will be very useful because they will be able to do everything for us. A.most B.most of C.almost D.almost of 15. "Do you think robots can work longer than people getting tired?" A.but B.with C.without D.of 16.My father always coffee at home instead of going to the coffee shop. A.do B.does C.make D.makes 17.Robots will be able to the personal computer in the future. A.do B.replace C.make D.recognise 18.Nowadays robots can't talk to people or play sport,but in the future I think they . A.can B.could C.will D.do 19. "Will robots be able our voices?" A.to recognise B.recognising C.to recognising D.for recognising 20.Robots can't talk to people or recognise our voices, butscientists are working the solution. A.at B.on C.in D.with 21.Many people think spending money on robots is a complete of time and money. A. cut B.number C.waste D.amount 22. " you walk when you were two?" A.Can B.Could C.Will D.Do 23.These robots can domany things for the such as cleaning streets or watering plants. A.common B.best C.human D.public 24.Home robots can do things repairing things around the house or looking after the garden. A.such B.like C.with D.of 25. " do you think about the new kinds of robots?" A.How B.What C.Why D.When 26.Our future robot will be able to help us the gardening. A.do B.make C.try D.plant 27. "Robots are helping usa lot in industry, education, and in our house" - " " A.I agree with you B.I hope not C.Do you agree with that? D.What about you? 28. "We waste a lot of money and time researching and making robots" " ". A.I think not. B.I don't think so. C.I agree with. D.I don't hope so. 29.We must be careful because some people may userobots . A.do good things B.to do good things C.do bad things D.to do bad things 30.Robots will be very useful for ourlives but they use energy. A.some B.a little C. D.too much

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team